__tests__/play.js
import { play } from '../src';
const losingField = [
[2, 4, 2, 4],
[4, 2, 4, 2],
[2, 4, 2, 4],
[4, 2, 4, 2],
];
const losingResponce = {
prevField: losingField,
nextField: losingField,
};
it('should loss', () => {
expect(play({ prevField: losingField, direction: 'down' })).toEqual(losingResponce);
});